Array substrate and liquid crystal panel

ABSTRACT

An array substrate and a display panel are provided. Each of sub-pixels is provided with a plurality of display domains. A first electrode retaining wall and a second electrode retaining wall are respectively disposed on both sides of the display domain, and the first electrode retaining wall is electrically connected to pixel electrodes. The second electrode retaining wall is electrically connected to common electrodes, and a horizontal electric field is generated between the first electrode retaining wall and the second electrode retaining wall, such that liquid crystal units in the display domain are aligned horizontally, thereby improving transmittance of the sub-pixels.

FIELD OF INVENTION

The present disclosure relates to the field of display technologies, andmore particularly to an array substrate and a liquid crystal panelhaving the same.

BACKGROUND OF INVENTION

Liquid crystal displays (LCD) have many advantages such as thin body,power saving, no radiation, etc., and have been widely used.

Fringe field switching (FFS) liquid crystal display panels and in-planeswitching (IPS) liquid crystal display panels are two mainstream liquidcrystal display panels. Pixel electrodes driving liquid crystal unitsare all disposed on a side of an array substrate. As shown in FIG. 1A, aschematic structural diagram of an array substrate 10 in a liquidcrystal display panel in FFS and IPS display modes is provided. Pixelelectrodes 14 and common electrodes 13 are respectively disposed on twosides of a passivation layer 11, and the pixel electrodes 14 are inelectrical contact with a drain electrode 12. As shown in FIG. 1B andFIG. 1C, a liquid crystal display panel includes an array substrate 10,a liquid crystal cell 20, and a color filter substrate 30. The pixelelectrodes 14 and the common electrodes 13 in the array substrate 10generate horizontal and vertical electric fields, which causes liquidcrystal in the liquid crystal cell 20 to rotate in a direction and bearranged obliquely. In the liquid crystal panel of the above two displaymodes, electric field lines in the liquid crystal cell are distributedin an arc shape, and there are horizontally and vertically distributedelectric fields. The horizontal electric field component is an effectivecomponent for display. The vertical electric field component causes theliquid crystal cell to stand up, and the vertical electric field and thehorizontal electric field occupy a relatively large proportion. Thiscauses a birefringence effect of a liquid crystal layer to weaken,resulting in a decrease in transmittance and affecting displayperformance of the liquid crystal panel.

SUMMARY OF INVENTION

An object of the present application is to provide an array substrateand a liquid crystal panel, which can solve technical problems that inthe prior art, electric field lines in a liquid crystal cell of a liquidcrystal pane are distributed in an arc shape, there are horizontally andvertically distributed electric fields, the horizontal electric fieldcomponent is an effective component for display, the vertical electricfield component causes the liquid crystal cell to stand up, and thevertical electric field and the horizontal electric field occupy arelatively large proportion, thereby causing a birefringence effect of aliquid crystal layer to weaken, resulting in a decrease in transmittanceand affecting display performance of the liquid crystal panel.

In order to solve the foregoing issues, embodiments of the presentapplication provide the following technical solutions to solve theforegoing issues.

An embodiment of the present invention provides a driving circuit, adriving method, and a display device, which are used to solve thetechnical problem that a current driving circuit has a large current ona common voltage line and damages a display screen.

To solve the above problems, the technical solutions provided in thisapplication are as follows.

An embodiment of the present application provides an array substratecomprising sub-pixels. Each of the sub-pixels comprises: a substrate,pixel electrodes disposed above the substrate, common electrodesdisposed above the pixel electrodes, and a first electrode retainingwall and a second electrode retaining wall which are arranged to beinsulated from each other and are disposed above the common electrodes.The first electrode retaining wall is electrically connected to thepixel electrodes, and the second electrode retaining wall iselectrically connected to the common electrodes.

In an embodiment of the present application, the sub-pixels comprise afirst display domain, the first electrode retaining wall is disposed ona side of the first display domain near a driving transistor in thearray substrate, and the second electrode retaining wall is disposed ona side of the first display domain away from the driving transistor.

In an embodiment of the present application, the sub-pixels comprise asecond display domain and a third display domain, and the second displaydomain and the third display domain are arranged in a same row or in asame column, the first electrode retaining wall is disposed between thesecond display domain and the third display domain, and the secondelectrode retaining wall is disposed on both sides of the second displaydomain and the third display domain.

In an embodiment of the present application, the sub-pixels comprise afourth display domain, a fifth display domain, a sixth display domain,and a seventh display domain, the first electrode retaining wall and thesecond electrode retaining wall are alternately disposed in the fourthdisplay domain, the fifth display domain, the sixth display domain, andthe seventh display domain.

In an embodiment of the present application, the fourth display domain,the fifth display domain, the sixth display domain, and the seventhdisplay domain are arranged in a same row or in a same column.

In an embodiment of the present application, the fourth display domainand the fifth display domain are arranged in a same row, the sixthdisplay domain and the seventh display domain are arranged in a samerow, the fourth display domain and the sixth display domain are arrangedin a same column, and the fifth display domain and the seventh displaydomain are arranged in a same column.

In an embodiment of the present application, the sub-pixels comprise aneighth display domain, a ninth display domain, a tenth display domain,an eleventh display domain, a twelfth display domain, a thirteenthdisplay domain, a fourteenth display domain, and a fifteenth displaydomain. The first electrode retaining wall and the second electroderetaining wall are alternately arranged in the eighth display domain,the ninth display domain, the tenth display domain, the eleventh displaydomain, the twelfth display domain, the thirteenth display domain, thefourteenth display domain, and the fifteenth display domain.

In an embodiment of the present application, the eighth display domain,the ninth display domain, the tenth display domain, the eleventh displaydomain, the twelfth display domain, the thirteenth display domain, thefourteenth display domain, and the fifteenth display domain are arrangedin a same row or in a same column.

In an embodiment of the present application, the eighth display domain,the ninth display domain, the tenth display domain, and the eleventhdisplay domain are arranged in a same row, the twelfth display domain,the thirteenth display domain, the fourteenth display domain, and thefifteenth display domain are arranged in a same row, the eighth displaydomain and the twelfth display domain are arranged in a same column, theninth display domain and the thirteenth display domain are arranged in asame column, the tenth display domain and the fourteenth display domainare arranged in a same column, and the eleventh display domain and thefifteenth display domain are arranged in a same column.

In an embodiment of the present application, the second electroderetaining wall is shared by adjacent sub-pixels.

In an embodiment of the present application, each of the first electroderetaining wall and the second electrode retaining wall comprises aspacer and a conductive layer wrapped on a surface of the spacer.

In an embodiment of the present application, the first electroderetaining wall and the second electrode retaining wall have a sameshape.

In an embodiment of the present application, the first electroderetaining wall and the second electrode retaining wall are bothrectangular parallelepipeds.

In an embodiment of the present application, the first electroderetaining wall and the second electrode retaining wall are disposed onopposite boundaries of sub-pixel partitions in the array substrate,respectively.

In an embodiment of the present application, a layer in which a drainelectrode is disposed in the array substrate is a same layer as thepixel electrodes, and adjacent ends of the pixel electrodes and thedrain electrode are in electrical contact.

In an embodiment of the present application, a voltage value of a pixelbranch electrode corresponding to a display domain in the sub-pixels isadjusted synchronously by a same thin film transistor.

In an embodiment of the present application, the pixel branch electrodecomprises a first trunk electrode, a second trunk electrode, and aconnection electrode.

In an embodiment of the present application, the connection electrode isring-shaped and comprises one or more shapes of rectangular,quadrangular, trapezoidal, and irregular shapes.

In an embodiment of the present application, the common electrodes arespaced above the pixel electrodes.

An embodiment of the present application further provides a liquidcrystal panel comprising the above array substrate, a liquid crystalcell, and a color filter substrate. The liquid crystal cell is providedwith a plurality of liquid crystal units and is disposed in a displaydomain of the array substrate, a horizontal electric field is generatedby the first electrode retaining wall and the second electrode retainingwall on both sides of the display domain, such that the liquid crystalunits are aligned horizontally under action of the horizontal electricfield.

Beneficial effects of the present application are that in an embodimentof the present application, one sub-pixel includes one or more displaydomains to improve resolution of a liquid crystal panel. A firstelectrode retaining wall and a second electrode retaining wall areprovided in a boundary gap of each display domain, which will not affecttransmittance of the sub-pixel. The first electrode retaining wall andthe second electrode retaining wall generate a horizontal electricfield, which effectively reduces a ratio of a vertical electric fieldand a horizontal electric field generated by sub-pixel electrodes andcommon electrodes in the display domain in the array substrate. Thisensures that liquid crystal units disposed in the display domain arealigned horizontally, thereby increasing transmittance of the sub-pixel.Adjacent sub-pixel partitions share a second electrode retaining wall,and pixel electrodes are connected to branch electrodes in each displaydomain through a via hole, thereby realizing normal display of theliquid crystal panel.

DESCRIPTION OF DRAWINGS

In order to explain the technical solutions in the embodiments of thepresent application more clearly, the drawings used in the descriptionof the embodiments will be briefly introduced below. Obviously, thedrawings in the following description are only some embodiments of thepresent application. For those skilled in the art, other drawings can beobtained based on these drawings without paying creative efforts.

FIG. 1A is a schematic structural diagram of an array substrate in theprior art.

FIG. 1B is a schematic diagram of an electric field distribution in aliquid crystal cell of a liquid crystal panel in the prior art.

FIG. 1C is a schematic diagram of an arrangement of liquid crystal unitsin a liquid crystal cell of a liquid crystal panel in the prior art.

FIG. 2A is a schematic structural diagram of an array substrateaccording to an embodiment of the present application.

FIG. 2B is a schematic structural diagram of a display domain in anarray substrate according to an embodiment of the present application.

FIG. 2C is a schematic structural diagram of two display domains in anarray substrate according to an embodiment of the present application.

FIG. 2D is a schematic structural diagram of four display domains in anarray substrate according to an embodiment of the present application.

FIG. 2E is another schematic structural diagram of four display domainsin an array substrate according to an embodiment of the presentapplication.

FIG. 2F is a schematic structural diagram of eight display domains in anarray substrate according to an embodiment of the present application.

FIG. 2G is another schematic structural diagram of eight display domainsin an array substrate according to an embodiment of the presentapplication.

FIG. 3 is a schematic structural diagram of a branch electrode in adisplay domain in an array substrate according to an embodiment of thepresent application.

FIG. 4 is a schematic structural diagram of a liquid crystal panelaccording to an embodiment of the present application.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The following describes the present application in detail with referenceto the accompanying drawings and embodiments. It is particularly pointedout that the following examples are only used to illustrate the presentapplication, but not to limit the scope of the present application.Similarly, the following embodiments are only some of the embodiments ofthe present application, but not all the embodiments. All otherembodiments obtained by a person of ordinary skill in the art withoutcreative efforts shall fall within the protection scope of the presentapplication.

In the prior art, electric field lines in a liquid crystal cell of aliquid crystal pane are distributed in an arc shape, there arehorizontally and vertically distributed electric fields, the horizontalelectric field component is an effective component for display, thevertical electric field component causes the liquid crystal cell tostand up, and the vertical electric field and the horizontal electricfield occupy a relatively large proportion, thereby causing abirefringence effect of a liquid crystal layer to weaken, resulting in adecrease in transmittance and affecting display performance of theliquid crystal panel. Embodiments of the present application can solvethis defect.

As shown in FIG. 2A, an embodiment of the present application providesan array substrate 100. The array substrate 100 forms sub-pixels. Eachof the sub-pixels comprises: a substrate 1011, pixel electrodes 102disposed above the substrate 1011, common electrodes 103 disposed abovethe pixel electrodes 102, and a first electrode retaining wall 105 and asecond electrode retaining wall 106 which are arranged to be insulatedfrom each other and are disposed above the common electrodes 103. Thefirst electrode retaining wall 105 is electrically connected to thepixel electrodes 102, and the second electrode retaining wall 106 iselectrically connected to the common electrodes 103.

In an embodiment, the pixel unit includes at least one sub-pixel. Thesub-pixel includes a second display domain 107 and a third displaydomain 108. The second electrode retaining wall 106 includes a firstsub-electrode retaining wall 1061 and a second sub-electrode retainingwall 1062. The first electrode retaining wall 105 is disposed betweenthe second display domain 107 and the third display domain 108 and isclose to a side of a driving transistor in the array substrate 100. Thesecond electrode retaining wall 106 is disposed on both sides of thesecond display domain 107 and the third display domain 108 and is farfrom a side of the driving transistor in the array substrate 100.Adjacent sub-pixels share adjacent second electrode retaining walls 106.The first electrode retaining wall 105 is disposed between the firstsub-electrode retaining wall 1061 and the second sub-electrode retainingwall 1062. A horizontal electric field is generated between the firstelectrode retaining wall 105 and the first sub-electrode retaining wall105. A horizontal electric field is generated between the firstelectrode retaining wall 105 and the second sub-electrode retaining wall1062. According to the actual needs of resolution of the array substrate100, the sub-pixels may also be set as one or more display domains. Thefirst electrode retaining wall 105 and the second electrode retainingwall 106 are alternately disposed in one or more display domains.

Specifically, an embodiment of the present application provides aschematic structural diagram of an array substrate 100. The arraysubstrate 100 further includes a substrate 1011, a gate 1012, a gateinsulating layer 1013, an active layer 1014, a source/drain layer 1015,a pixel electrode 102, a passivation layer 1016, a common electrode 103,a protective layer 104, the first electrode retaining wall 105, and thesecond electrode retaining wall 106.

The substrate 1011 is usually a glass substrate, and may be a substrateof other materials, which is not limited herein. The gate layer 1012 isformed on a substrate 1011. The gate layer 1012 is formed on thesubstrate 1011 by a physical vapor deposition method, and then a gatepattern is formed through a photolithography process. Material of thegate layer 1012 may be a metal material, such as copper (Cu), aluminum(Al), titanium (Ti), tantalum (Ta), tungsten (W), molybdenum (Mo),chromium (Cr), or the like.

The gate insulating layer 1013 is formed on the gate layer 1012 andcovers the gate layer 1012 and the substrate 1011. The gate insulatinglayer 1013 is formed on the gate layer 1012 by a chemical vapordeposition method, and then annealed in a dry air atmosphere at 400° C.Material of the gate insulating layer 1013 is generally a sandwichstructure of silicon oxide (SiOx) and silicon nitride (SiNx).

The active layer 1014 is formed on the gate insulating layer 1013 and isdisposed to be insulated from the gate layer 1012. The active layer 1014is deposited on the gate insulating layer 1013 by a magnetron sputteringmethod, a metal organic chemical vapor deposition method, or a pulselaser evaporation method. After deposition of the active layer 1014 iscompleted, an annealing process is performed, and the annealing processcan be performed in a dry air atmosphere at 400° C. for about 0.5 hours.After the annealing process is completed, the active layer 1014 isetched by a wet etching process or a dry etching process using oxalicacid as an etching solution. After the etching process, an entire metaloxide film is patterned to form an island-shaped metal oxidesemiconductor layer.

The source/drain layer 1015 is disposed on both sides of the activelayer 1014. The source/drain layer 1015 includes a source electrode10151 and a drain electrode 10152. The source electrode 10151 and thedrain electrode 10152 are electrically connected to correspondingpositions of the active layer 1014, respectively. A layer where thedrain electrode 10152 is disposed is the same layer as the pixelelectrode 102, and adjacent ends of the pixel electrode 102 and thedrain electrode 10152 are in electrical contact.

The passivation layer 1016 is formed on the source/drain layer 1015.Material of the passivation layer 1016 may be silicon oxide (SiOx),silicon nitride (SiNx), or an interlayer structure of the two. The pixelelectrode 102 is in electrical contact with the sub-pixel electroderetaining wall 106 through a via hole.

A plurality of spaced apart common electrodes 103 are formed above thepixel electrode 102, and the common electrodes 103 are disposed on asurface of the passivation layer 1016. The common electrodes 103 are inelectrical contact with the gate layer 1012. A surface of the commonelectrode 103 is provided with a protective layer 104, and theprotective layer 104 covers the passivation layer 1016.

The surface of the protective layer 104 is provided with a firstelectrode retaining wall 105 and a second electrode retaining wall 106.The first electrode retaining wall 105 and the second electroderetaining wall 106 are both perpendicular to the protective layer 104and extend upward to a preset position. Each of the first electroderetaining wall 105 and the second electrode retaining wall 106 includesa spacer and a conductive layer on the surface of the spacer. Theconductive layers are preferably provided in the same layer andintegrally formed. In this embodiment, the shapes of the first electroderetaining wall 105 and the second electrode retaining wall 106 arepreferably the same. The first electrode retaining wall 105 includes afirst spacer 1051 and a first conductive layer 1052. The secondelectrode retaining wall 106 includes a first sub-electrode retainingwall 1061 and a second sub-electrode retaining wall 1062. The firstsub-electrode retaining wall 1061 includes a second spacer 10611 and asecond electrode layer 10612. The second sub-electrode retaining wall1062 includes a third spacer 10621 and a third electrode layer 10622. Inorder to generate a horizontal electric field, the first electroderetaining wall 105 and the second electrode retaining wall 106 arepreferably rectangular parallelepipeds, and the two are arranged inparallel, spaced, and alternately. A second electrode retaining wall 106is disposed between any two adjacent first electrode retaining walls105. A first electrode retaining wall 105 is disposed between any twoadjacent second electrode retaining walls 106.

In this embodiment, the second electrode retaining wall 106 is disposedon both sides of the second display domain 107 and the third displaydomain 108 in the sub-pixel. The second electrode retaining wall 106 isin electrical contact with the common electrode 103 through a via holeon the protective layer. The first electrode retaining wall 105 is inelectrical contact with the pixel electrode 102 through a via hole onthe passivation layer and the protective layer. Adjacent sub-pixelsshare the second electrode retaining wall 106. The second electroderetaining wall 106 is placed in a non-opening area, and the firstelectrode retaining wall 105 is disposed at a boundary of the pixeldomain. That is, the first electrode retaining wall 105 and the secondelectrode retaining wall 106 are respectively disposed on oppositeboundaries of the sub-pixel partitions in the array substrate.Therefore, the effect of the first electrode retaining wall 105 and thesecond electrode retaining wall 106 on the pixel transmittance is low.The first electrode retaining wall 105 and the second electroderetaining wall 106 form a horizontal electric field in the displaydomain. This effectively reduces a ratio of the vertical electric fieldand the horizontal electric field generated by the pixel electrode andthe common electrode in the display domain in the array substrate. Thisensures that the liquid crystal units in the display domain are alignedhorizontally, thereby increasing the sub-pixel transmittance. The commonelectrode retaining wall is shared by adjacent sub-pixel partitions. Thepixel electrode is connected to the branch electrode in each displaydomain through a via hole, thereby realizing normal operation of thearray substrate.

As shown in FIG. 2B, an embodiment of the present application provides aschematic structural diagram of a display domain in an array substrate.The sub-pixel includes a first display domain 201. A boundary gap 2011of the first display domain 201 is provided with a second retaining wall106. A boundary gap 2012 of the first display domain 201 is providedwith a first electrode retaining wall 105. The first electrode retainingwall 105 is disposed on a side of the first display domain 201 near thedriving transistor in the array substrate. The second electroderetaining wall 106 is disposed on a side of the first display domain 201away from the driving transistor. A horizontal electric field isgenerated between the first electrode retaining wall 105 and the secondelectrode retaining wall 106.

As shown in FIG. 2C, an embodiment of the present application provides aschematic structural diagram of two display domains in an arraysubstrate. The sub-pixel includes a second display domain 107 and athird display domain 108. The second display domain 107 and the thirddisplay domain 108 are arranged in parallel. The first electroderetaining wall 105 is disposed on a boundary gap 1078 between the seconddisplay domain 107 and the third display domain 108. The secondelectrode retaining wall 106 is disposed on a side boundary gap 1071 ofthe second display domain 107 and a side boundary gap 1081 of the thirddisplay domain 108, respectively. A horizontal electric field isgenerated between adjacent first electrode retaining wall 105 and secondelectrode retaining wall 106. A display domain arrangement of thisembodiment is not limited to the same row, but may be the same column.

As shown in FIG. 2D, an embodiment of the present application provides aschematic structural diagram of four display domains in an arraysubstrate. The sub-pixel includes a fourth display domain 202, a fifthdisplay domain 203, a sixth display domain 204, and a seventh displaydomain 205. The fourth display domain 202, the fifth display domain 203,the sixth display domain 204, and the seventh display domain 205 are inthe same row. The second electrode retaining wall 106 is disposed on theboundary gap 2021, the first electrode retaining wall 105 is disposed onthe boundary gap 2023, the second electrode retaining wall 106 isdisposed on the boundary gap 2034, and the first electrode retainingwall 105 is disposed on the boundary gap 2045. The second electroderetaining wall 106 is disposed on the boundary gap 2051. A horizontalelectric field is generated between the adjacent first electroderetaining wall 105 and the second electrode retaining wall 106. Thisembodiment shows that the domain arrangement is not limited to the samerow but may be the same column.

As shown in FIG. 2E, an embodiment of the present application providesanother structural diagram of four display domains in an arraysubstrate. The sub-pixels include a fourth display domain 206, a fifthdisplay domain 207, a sixth display domain 208, and a seventh displaydomain 209. The fourth display domain 206 and the fifth display domain207 are arranged in the same row, the sixth display domain 208 and theseventh display domain 209 are arranged in the same row, the fourthdisplay domain 206 and the sixth display domain 208 are arranged in thesame column, and the fifth display domain 207 is provided in the samecolumn as the seventh display domain 209.

The second electrode retaining wall 106 is disposed on the boundary gap2061, the first electrode retaining wall 105 is disposed on the boundarygap 2067, the second electrode retaining wall 106 is disposed on theboundary gap 2071, and the second electrode retaining wall 106 isdisposed on the boundary gap 2081. The first electrode retaining wall105 is disposed on the boundary gap 2089, and the second electroderetaining wall 106 is disposed on the boundary gap 2091. A horizontalelectric field is generated between the adjacent first electroderetaining wall 105 and the second electrode retaining wall 106.

As shown in FIG. 2F, an embodiment of the present application provides aschematic structural diagram of eight display domains in an arraysubstrate. The sub-pixels include an eighth display domain 301, a ninthdisplay domain 302, a tenth display domain 303, an eleventh displaydomain 304, a twelfth display domain 305, a thirteenth display domain306, a fourteenth display domain 307, and a fifteen display domain 308.Eighth display domain 301, ninth display domain 302, tenth displaydomain 303, eleventh display domain 304, twelfth display domain 305,thirteenth display domain 306, fourteenth display domain 307, andfifteenth display domain 308 are arranged in the same row.

The second electrode retaining wall 106 is disposed on the boundary gap3011, and the first electrode retaining wall 105 is disposed on theboundary gap 3012. The second electrode retaining wall 106 is disposedon the boundary gap 3023, and the first electrode retaining wall 105 isdisposed on the boundary gap 3034. The second electrode retaining wall106 is disposed on the boundary gap 3045, and the first electroderetaining wall 105 is disposed on the boundary gap 3056. The secondelectrode retaining wall 105 is disposed on the boundary gap 3067, andthe first electrode retaining wall 106 is disposed on the boundary gap3078. The second electrode retaining wall 105 is disposed on theboundary gap 3081. A horizontal electric field is generated between theadjacent first electrode retaining wall 105 and the second electroderetaining wall 106. This embodiment shows that the domain arrangement isnot only in the same row, but also in the same column.

As shown in FIG. 2G, an embodiment of the present application providesanother schematic structural diagram of eight display domains in anarray substrate. The sub-pixel includes an eighth display domain 401, aninth display domain 402, a tenth display domain 403, an eleventhdisplay domain 404, a twelfth display domain 405, a thirteenth displaydomain 406, a fourteenth display domain 407, and a fifteen displaydomain 408. The eighth display domain 401, the ninth display domain 402,the tenth display domain 403, and the eleventh display domain 404 arearranged in the same row. The twelfth display domain 405, the thirteenthdisplay domain 406, the fourteenth display domain 407, and the fifteenthdisplay domain 408 are arranged in the same row. The eighth displaydomain 401 and the twelfth display domain 405 are arranged in the samecolumn. The ninth display domain 402 and the thirteenth display domain406 are arranged in the same column. The tenth display domain 403 andthe fourteenth display domain 407 are arranged in the same column. Theeleventh display domain 404 and the fifteenth display domain 408 arearranged in the same column.

The second electrode retaining wall 106 is disposed on the boundary gap4011, and the first electrode retaining wall 105 is disposed on theboundary gap 4012. The second electrode retaining wall 106 is disposedon the boundary gap 4023, and the first electrode retaining wall 105 isdisposed on the boundary gap 4034. The second electrode retaining wall106 is disposed on the boundary gap 4041, and the second electroderetaining wall 106 is disposed on the boundary gap 4051. The firstelectrode retaining wall 105 is disposed on the boundary gap 4056, andthe second electrode retaining wall 106 is disposed on the boundary gap4067. The first electrode retaining wall 105 is disposed on the boundarygap 4078, and the second electrode retaining wall 106 is disposed on theboundary gap 4081. A horizontal electric field is generated between theadjacent first electrode retaining wall 105 and the second electroderetaining wall 106.

As shown in FIG. 3, an embodiment of the present application provides aschematic structural diagram of a branch electrode in a display domainof an array substrate. The branch electrode includes a first trunkelectrode 5021, a second trunk electrode 5022, a first connectionelectrode 5023, and a second connection electrode 5024. The first trunkelectrode 5021 and the second trunk electrode 5022 are overlapped. Thefirst connection electrode 5023 and the second connection electrode 5024respectively connect branch electrodes in adjacent display domains, andfunction as a bridge. The first connection electrode 5023 is ring-shapedand includes one or more of rectangular, quadrangular, trapezoidal, andirregular shapes. The second connection electrode 5024 includes one ormore of a straight line and a curved line. Preferably, the voltage valueof the branch electrode of the pixel corresponding to the display domainin the same sub-pixel is adjusted synchronously by the same thin filmtransistor or may be adjusted by multiple thin film transistors.

According to the above object of the present application, an embodimentof the present application provides a liquid crystal panel comprisingthe above array substrate, a liquid crystal cell, and a color filtersubstrate. The liquid crystal cell is provided with a plurality ofliquid crystal units and is disposed in a display domain of the arraysubstrate, a horizontal electric field is generated by the firstelectrode retaining wall and the second electrode retaining wall on bothsides of the display domain, such that the liquid crystal units arealigned horizontally under action of the horizontal electric field.

As shown in FIG. 4, an embodiment of the present application provides aschematic structural diagram of a liquid crystal panel 600. The liquidcrystal panel 600 includes an array substrate, a color filter substrate601, and a liquid crystal cell 602 disposed between the array substrateand the color filter substrate 601. The color filter substrate 601includes a color resist layer. The liquid crystal cell 602 includes aplurality of liquid crystal units. The liquid crystal units are arrangedhorizontally under action of a horizontal electric field generated bythe first retaining wall and the second retaining wall in the arraysubstrate.

The array substrate includes a substrate 1011, a gate 1012, a gateinsulating layer 1013, an active layer 1014, a source/drain layer 1015,a pixel electrode 102, a passivation layer 1016, a common electrode 103,a protective layer 104, the first electrode retaining wall 105, and thesecond electrode retaining wall 106 which are stacked from bottom totop. The first electrode retaining wall 105 and the second electroderetaining wall 106 are insulated from each other and disposed above thecommon electrode 103. The first electrode retaining wall 105 iselectrically connected to the pixel electrode 102, and the secondelectrode retaining wall 106 is electrically connected to the commonelectrode 103. The second electrode retaining wall 106 includes a firstsub-electrode retaining wall 1061 and a second sub-electrode retainingwall 1062.

The liquid crystal cell 602 includes a first liquid crystal partitionand a second liquid crystal partition. The first liquid crystalpartition and the second liquid crystal partition overlap the seconddisplay domain 107 and third display domain 108, respectively. Theliquid crystals 6027 in the first liquid crystal partition are arrangedhorizontally under the action of a horizontal electric field generatedby the first sub-electrode retaining wall 1061 and the firstsub-electrode retaining wall 105. The liquid crystal units 6028 in thesecond liquid crystal partition are arranged horizontally under theaction of the horizontal electric field generated by the secondsub-electrode retaining wall 1062 and the first electrode retaining wall105. This improves transmittance of the sub-pixels and ensures displayperformance of the liquid crystal panel 600.

In an embodiment of the present application, one sub-pixel includes oneor more display domains to improve resolution of a liquid crystal panel.A first electrode retaining wall and a second electrode retaining wallare provided in a boundary gap of each display domain, which will notaffect transmittance of the sub-pixel. The first electrode retainingwall and the second electrode retaining wall generate a horizontalelectric field, which effectively reduces a ratio of a vertical electricfield and a horizontal electric field generated by sub-pixel electrodesand common electrodes in the display domain in the array substrate. Thisensures that liquid crystal units disposed in the display domain arealigned horizontally, thereby increasing transmittance of the sub-pixel.Adjacent sub-pixel partitions share a second electrode retaining wall,and pixel electrodes are connected to branch electrodes in each displaydomain through a via hole, thereby realizing normal display of theliquid crystal panel.

In summary, although the present application has been disclosed abovewith preferred embodiments, the above preferred embodiments are notintended to limit the present application. Those of ordinary skill inthe art can make various modifications and improvements withoutdeparting from the spirit and scope of the present application.Therefore, the protection scope of the present application is subject tothe scope defined by the claims.

What is claimed is:
 1. An array substrate, comprising: sub-pixels,wherein each of the sub-pixels comprises: a substrate; pixel electrodesdisposed above the substrate; common electrodes disposed above the pixelelectrodes; and a first electrode retaining wall and a second electroderetaining wall which are arranged to be insulated from each other andare disposed above the common electrodes; wherein the first electroderetaining wall is electrically connected to the pixel electrodes, andthe second electrode retaining wall is electrically connected to thecommon electrodes.
 2. The array substrate according to claim 1, whereinthe sub-pixels comprise a first display domain, the first electroderetaining wall is disposed on a side of the first display domain near adriving transistor in the array substrate, and the second electroderetaining wall is disposed on a side of the first display domain awayfrom the driving transistor.
 3. The array substrate according to claim1, wherein the sub-pixels comprise a second display domain and a thirddisplay domain, and the second display domain and the third displaydomain are arranged in a same row or in a same column; wherein the firstelectrode retaining wall is disposed between the second display domainand the third display domain, and the second electrode retaining wall isdisposed on both sides of the second display domain and the thirddisplay domain.
 4. The array substrate according to claim 1, wherein thesub-pixels comprise a fourth display domain, a fifth display domain, asixth display domain, and a seventh display domain; wherein the firstelectrode retaining wall and the second electrode retaining wall arealternately disposed in the fourth display domain, the fifth displaydomain, the sixth display domain, and the seventh display domain.
 5. Thearray substrate according to claim 4, wherein the fourth display domain,the fifth display domain, the sixth display domain, and the seventhdisplay domain are arranged in a same row or in a same column.
 6. Thearray substrate according to claim 4, wherein the fourth display domainand the fifth display domain are arranged in a same row, the sixthdisplay domain and the seventh display domain are arranged in a samerow, the fourth display domain and the sixth display domain are arrangedin a same column, and the fifth display domain and the seventh displaydomain are arranged in a same column.
 7. The array substrate accordingto claim 1, wherein the sub-pixels comprise an eighth display domain, aninth display domain, a tenth display domain, an eleventh displaydomain, a twelfth display domain, a thirteenth display domain, afourteenth display domain, and a fifteenth display domain; wherein thefirst electrode retaining wall and the second electrode retaining wallare alternately arranged in the eighth display domain, the ninth displaydomain, the tenth display domain, the eleventh display domain, thetwelfth display domain, the thirteenth display domain, the fourteenthdisplay domain, and the fifteenth display domain.
 8. The array substrateaccording to claim 7, wherein the eighth display domain, the ninthdisplay domain, the tenth display domain, the eleventh display domain,the twelfth display domain, the thirteenth display domain, thefourteenth display domain, and the fifteenth display domain are arrangedin a same row or in a same column.
 9. The array substrate according toclaim 7, wherein the eighth display domain, the ninth display domain,the tenth display domain, and the eleventh display domain are arrangedin a same row, the twelfth display domain, the thirteenth displaydomain, the fourteenth display domain, and the fifteenth display domainare arranged in a same row, the eighth display domain and the twelfthdisplay domain are arranged in a same column, the ninth display domainand the thirteenth display domain are arranged in a same column, thetenth display domain and the fourteenth display domain are arranged in asame column, and the eleventh display domain and the fifteenth displaydomain are arranged in a same column.
 10. The array substrate accordingto claim 1, wherein the second electrode retaining wall is shared byadjacent sub-pixels.
 11. The array substrate according to claim 1,wherein each of the first electrode retaining wall and the secondelectrode retaining wall comprises a spacer and a conductive layerwrapped on a surface of the spacer.
 12. The array substrate according toclaim 11, wherein the first electrode retaining wall and the secondelectrode retaining wall have a same shape.
 13. The array substrateaccording to claim 12, wherein the first electrode retaining wall andthe second electrode retaining wall are both rectangularparallelepipeds.
 14. The array substrate according to claim 1, whereinthe first electrode retaining wall and the second electrode retainingwall are disposed on opposite boundaries of sub-pixel partitions in thearray substrate, respectively.
 15. The array substrate according toclaim 1, wherein a layer in which a drain electrode is disposed in thearray substrate is a same layer as the pixel electrodes, and adjacentends of the pixel electrodes and the drain electrode are in electricalcontact.
 16. The array substrate according to claim 1, wherein a voltagevalue of a pixel branch electrode corresponding to a display domain inthe sub-pixels is adjusted synchronously by a same thin film transistor.17. The array substrate according to claim 16, wherein the pixel branchelectrode comprises a first trunk electrode, a second trunk electrode,and a connection electrode.
 18. The array substrate according to claim17, wherein the connection electrode is ring-shaped and comprises one ormore shapes of rectangular, quadrangular, trapezoidal, and irregularshapes.
 19. The array substrate according to claim 1, wherein the commonelectrodes are spaced above the pixel electrodes.
 20. A liquid crystalpanel, comprising: the array substrate according to claim 1, a liquidcrystal cell, and a color filter substrate; wherein the liquid crystalcell is provided with a plurality of liquid crystal units and isdisposed in a display domain of the array substrate, a horizontalelectric field is generated by the first electrode retaining wall andthe second electrode retaining wall on both sides of the display domain,such that the liquid crystal units are aligned horizontally under actionof the horizontal electric field.